Oseltamivir phosphate, sold under the brand name Tamiflu, is an antiviral medication used to treat influenza (flu) infections caused by influenza A and B viruses. It belongs to a class of medicines known as neuraminidase inhibitors, which work by blocking the activity of the neuraminidase enzyme on the surface of the influenza virus. By inhibiting neuraminidase, oseltamivir prevents the release of newly formed virus particles from infected cells, thus slowing down the spread of the virus in the body.
Oseltamivir Phosphate 75 mg is available in oral capsule and liquid suspension forms and is typically prescribed for a course of five days. It is important to complete the full course of treatment as directed by a healthcare professional, even if symptoms improve before the medication is finished.